THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 132

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Let X be a continuous random variable with mean of 1200 and standard deviation of 250.Define the random variable Y as follows: Y = 80 + 0.05X
-What is the mean of Y?

• A)680
• B)330
• C)120
• D)140

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Definitions:

Percentile Points

Values that divide a set of observations into 100 equal parts, often used to interpret scores in tests.

Distribution

The spread of values within a dataset, representing how often each value occurs.

T Scores

Standardized scores with a mean of 50 and a standard deviation of 10, used to compare an individual's result to a norm group.

Standard Scores

Scores that are expressed as the number of standard deviations above or below the mean of the distribution.